@article{DAN_1967_176_2_a4,
     author = {A. S. Il'inskii and A. G. Sveshnikov},
     title = {A method for investigating non-regular wave guides with impedance conditions at the boundary},
     journal = {Doklady Akademii Nauk},
     pages = {255--258},
     publisher = {mathdoc},
     volume = {176},
     number = {2},
     year = {1967},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1967_176_2_a4/}
}